RE: Bobcat .25 tips
Some notes on this plane in no particular order:
- If you use an electric motor, your prop selection range opens up greatly.
Pusher prop's are not all that common, and the range of available prop sizes is a bit limited.
You often have to use a prop that may not be ideal for your glow engine.
With an electric brushless motor, you can simply reverse two of the leads to reverse the motor direction, then simply turn a standard prop around and remount it like a pusher...
- With a 3900mAh 11v battery my plane came in at 3lbs 4oz. The airframe is designed for more weight so you have a good bit of leeway when selecting battery and motor combinations. Since this is ideally a speedly "jet like" plane you want to shoot for a high WATT per Pound ratio when going electric.
- You will have to make your own battery mount from Lite Ply Balsa. I cut the former a bit where the fuel tank would go, to permit me to install wide ( or stacked ) battery packs. The front of my battery tray extends from the glow tank's "hole" all the way to the servo mounting plate under the canopy.
That way I can move the batteries back or forward to affect the C.G.
- Pictured above is my solution for a quick removable canopy mount, to permit battery access.
I could have installed two of the bars and "catches" but I find that one will hold just fine. The magnets ( my first effort ) are not required.
- Spoileron's help landings greatly.
To get spoilerons to work you must have a computer controlled radio with mixing and have an extra available channel for the left Aileron.
Typically you adjust the wing "type" in the radio from "normal" to "flaperon".
Then you adjust the radio's programming so that when the flap switch is turned on, both ailerons will move UP about 1/4" or so.
Normal left-right stick movement should remain unaffected except for the up incidence of the ailerons.
Some radios have a "landing" switch that permit you to adjust several control surfaces by flipping one switch. I use this to bring the "flaps" UP and add a bit of downward pitch to the nose.
This has to be fine tuned in flight ( while HIGH ), so that ideally when you hit the "flap" or "landing" switch the ailerons come up but the plane does NOT pitch up as well.
Unlike typical tail draggers, moving the "flaps" ( actually spoilerons ) up causes the nose to pitch UP instead of down.
More to follow...